February 26, 2015: Felipe Massa showed the first tangible proof of Williams' potential this year by topping the times on the opening day of the final pre-season test in Barcelona as McLaren experienced more problems and Mercedes also suffered a rare reliability issue

February 26, 2015: Fernando Alonso's participation at the Australian Grand Prix is still uncertain as McLaren waits for doctors to give him the all clear following his crash during the second test in Spain